Hi, On Mon, 2010-09-06 at 10:02 +0100, Charles Barnwell wrote: > Christopher, > > > We appreciate your continued support on this. > > > I am supporting a group that uses LTSP with Dell clients using a > mixture of these two cards: > > > 00:02.0 VGA compatible controller: Intel Corporation > 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) > > > 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated > Graphics Controller (rev 02) > > > The 82865G cards work fine, but the Brookdale cards experience regular > crashes. This system was upgraded from Karmic (on Karmic the system > was reliably stable) and all clients seem to be using the i915 driver > rather than vesa driver. How did the blacklisting in Lucid work? > Would it not affect an upgrade?
In Lucid we stayed on the 2.9 version of the intel X driver (it was already out of date then). The 2.10 version dropped support for userspace modesetting, so now if you disable KMS the intel X driver will not load. The blacklisting will just be the kernel's default in the absence of other configuration. If you've re-enabled KMS on Lucid and upgrade, you'll still have KMS enabled. > > > I have tried the workarounds described in > https://wiki.ubuntu.com/X/Bugs/Lucidi8xxFreezes and the most > successful was to enable KMS and disable DRI. I tried to force use of > VESA driver, but I never managed to get an acceptable resolution on > the Brookdale cards. One of the more… endearing qualities of the i8xx freezes are that which workaround works best seem to be extremely hardware specific. Which is why there's a long list of possible solutions there! > > > My big concern is that if you use option 1, and it really does force > VESA driver then many people may experience poor resolution, which is > not a good experience for new users. > Yeah. Ideally we'd give new users the intel driver. The trick we're trying is to balance “poor resolution and no 3D” against “doesn't bring up the GUI” or “crashes every 5 minutes”. > > If we can be sure that people would not experience crashes, but would > have a good resolution then I also vote for option 1. > > > I'm afraid we are going to be swapping the Brookdale machines for > devices that have a different card, so I will not be able to help in > any more diagnosis, but we really have to give this customer a stable > system now. > Perfectly reasonable. The switch to a GPU memory manager has not been kind on the i845 chips.
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